From 7f409eef22d1e33aaeb6b66fc5a4f0570d9424d1 Mon Sep 17 00:00:00 2001
From: "lab34 (BiriukovaAlS)" <BiriukovaAlS@mpei.ru>
Date: Mon, 22 May 2023 01:44:47 +0300
Subject: [PATCH] svg

---
 svg.cpp | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 svg.cpp

diff --git a/svg.cpp b/svg.cpp
new file mode 100644
index 0000000..49240e0
--- /dev/null
+++ b/svg.cpp
@@ -0,0 +1,83 @@
+#include <math.h>
+#include <iostream>
+#include <conio.h>
+#include <vector>
+#include <string>
+#include "svg.h"
+using namespace std;
+
+
+void
+svg_begin(double width, double height)
+{
+    cout << "<?xml version='1.0' encoding='UTF-8'?>\n";
+    cout << "<svg ";
+    cout << "width='" << width << "' ";
+    cout << "height='" << height << "' ";
+    cout << "viewBox='0 0 " << width << " " << height << "' ";
+    cout << "xmlns='http://www.w3.org/2000/svg'>\n";
+}
+
+void
+svg_end()
+{
+    cout << "</svg>\n";
+}
+void
+svg_text(double left, double baseline, string text)
+{
+    cout << "<text x='" << left << "' y='" << baseline << "'>" << text << "</text>";
+}
+void
+svg_rect(double x, double y, double width, double height, string stroke, string fill)
+{
+    cout << "<rect x='"<<x<<"' y='"<<y<<"' width='"<<width<<"' height='"<<height<<" stroke='"<<stroke<<"' fill='"<<fill<<"' />";
+
+}
+
+void
+show_histogram_svg(const vector<size_t>& B, size_t& number_count)
+{
+    auto IMAGE_WIDTH=0;
+    const auto BLOCK_WIDTH = 10;
+    cerr << "Enter IMAGE_WIDTH:";
+    cin >> IMAGE_WIDTH;
+
+    while (IMAGE_WIDTH<70 || IMAGE_WIDTH>800 || IMAGE_WIDTH<(number_count/3.0*BLOCK_WIDTH))
+    {
+        cout<<"Error, incorrect IMAGE_WIDTH, please, re-enter\n";
+        cerr << "Enter IMAGE_WIDTH:";
+        cin >> IMAGE_WIDTH;
+    }
+
+    const auto IMAGE_HEIGHT = 300;
+    const auto TEXT_LEFT = 20;
+    const auto TEXT_BASELINE = 20;
+    const auto TEXT_WIDTH = 50;
+    const auto BIN_HEIGHT = 30;
+
+    const auto MAX_WIDTH = IMAGE_WIDTH-TEXT_WIDTH;
+
+    svg_begin(IMAGE_WIDTH,IMAGE_HEIGHT);
+
+    double top = 0;
+    double max_count = B[0];
+    for (size_t i = 0; i < B.size(); i++)
+    {
+        if (max_count<B[i])
+        {
+            max_count=B[i];
+        }
+    }
+
+    for (size_t bin : B)
+    {
+        double bin_width = (MAX_WIDTH)*(bin/max_count);
+        svg_text(TEXT_LEFT, top+TEXT_BASELINE,to_string(bin));
+        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "black", "green");
+        top += BIN_HEIGHT;
+    }
+
+    svg_end();
+}
+